Select Program Area --Select Program Area-- ESE HOME Accountability, Partnership, & Assistance Adult & Community Learning Amazing Educators BOE Advisory Councils Board of Elementary & Secondary Education Career/Vocational Technical Education Charter Schools College and Career Readiness Compliance/Monitoring (PQA) Conferences, Workshops and Trainings Curriculum & Instruction Digital Learning District & School Assistance Centers (DSACs) District & School Turnaround District Review, Analysis, & Assistance Tools Educator Evaluation Educator Licensure Tests (MTEL) Educator Licensure Educational Proficiency Plan (EPP) Edwin ELAR Log In Employment Opportunities: ESE English Language Learners Every Student Succeeds Act (ESSA) Family Literacy High School Equivalency (HSE) Testing Program Grants/Funding Opportunities Information Services Laws & Regulations Student and Family Support (SFS) Literacy LEAP Project Massachusetts Tiered System of Support (MTSS) MCAS MCAS Appeals METCO Office for Food and Nutrition Programs Performance Assessment for Leaders (PAL) Planning and Research Professional Development RETELL Safe and Supportive Schools School and District Profiles/Directory School Finance School Redesign Science, Technology Engineering, and Mathematics (STEM) Security Portal | MassEdu Gateway Special Education Special Education Appeals Special Education in Institutional Settings Statewide System of Support Student Support Title I/Federal Support Programs
 News School/District Profiles School/District Administration Educator Services Assessment/Accountability Family & Community

# Massachusetts Comprehensive Assessment System

## 2011, Grade 8 Science and Technology/Engineering

 Question 21: Open-Response Reporting Category: Earth and Space ScienceStandard: 2 - Describe the layers of the earth, including the lithosphere, the hot convecting mantle, and the dense metallic core. The diagram below shows three main layers that compose Earth. The layers are labeled X, Y, and Z.Identify each of the three layers of Earth (X, Y, and Z) labeled in the diagram.Describe one characteristic of the layer labeled X.Describe one characteristic of the layer labeled Y.Describe one way that the layer labeled Y interacts with the layer labeled Z.

### Scoring Guide and Sample Student WorkSelect a score point in the table below to view the sample student response.

ScoreDescription
4 The response demonstrates a thorough understanding of the layers of Earth. The response correctly identifies the three layers (X, Y, and Z) labeled in the diagram. The response clearly describes one characteristic of the layer labeled X and one characteristic of the layer labeled Y. The response clearly describes one way that the layer labeled Y interacts with the layer labeled Z.
4
3
The response demonstrates a general understanding of the layers of Earth, including the lithosphere, the hot convecting mantle, and the dense metallic core.
2
The response demonstrates a limited understanding of the layers of Earth, including the lithosphere, the hot convecting mantle, and the dense metallic core.
1
The response demonstrates a minimal understanding of the layers of Earth, including the lithosphere, the hot convecting mantle, and the dense metallic core.
0
The response is incorrect or contains some correct work that is irrelevant to the skill or concept being measured.

Note: There are 2 sample student responses for Score Point 4.

Question 11:
Question 21: